Ionis Pharmaceuticals (IONS) Insider Trading & Ownership $37.01 +0.86 (+2.38%) Closing price 06/18/2025 04:00 PM EasternExtended Trading$37.32 +0.31 (+0.82%) As of 06/18/2025 07:59 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Ionis Pharmaceuticals (NASDAQ:IONS) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage2.60%Number OfInsiders Buying(Last 12 Months)1Amount OfInsider Buying(Last 12 Months)$659KNumber OfInsiders Selling(Last 12 Months)7Amount OfInsider Selling(Last 12 Months)$4.66M Get IONS Insider Trade Alerts Want to know when executives and insiders are buying or selling Ionis Pharmaceuticals stock? 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Email Address IONS Insider Buying and Selling by Quarter Ionis Pharmaceuticals Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails5/1/2025Michael R HaydenDirectorBuy15,000$31.86$477,900.00 4/16/2025Brian BirchlerEVPSell680$28.37$19,291.60 3/11/2025Brett P MoniaCEOSell140$32.32$4,524.80 2/20/2025Patrick R O'neilEVPSell1,207$32.35$39,046.45 2/4/2025Brett P MoniaCEOSell38,843$31.65$1,229,380.95 2/4/2025Patrick R O'neilEVPSell6,165$31.62$194,937.30 1/31/2025Brett P MoniaCEOSell13,242$32.45$429,702.90 1/31/2025Elizabeth L HougenCFOSell1,523$32.44$49,406.12 1/31/2025Eric SwayzeEVPSell1,367$32.31$44,167.77 1/16/2025Brett P MoniaCEOSell33,445$32.63$1,091,310.35 Get Insider Trades Delivered To Your InboxEnter your email address below to receive a concise daily summary of insider buying activity, insider selling activity and changes in hedge fund holdings. 1/16/2025Elizabeth L HougenCFOSell8,870$32.81$291,024.70 1/16/2025Eric SwayzeEVPSell7,154$32.84$234,937.36 12/23/2024Michael R HaydenDirectorBuy5,000$36.22$181,100.00 11/12/2024Brett P MoniaCEOSell6,630$38.05$252,271.50 11/12/2024Eric SwayzeEVPSell1,194$37.92$45,276.48 10/16/2024Eric SwayzeEVPSell53$38.31$2,030.43 8/28/2024Richard S GearyEVPSell320$49.16$15,731.20 8/5/2024Richard S GearyEVPSell2,430$48.00$116,640.00 7/16/2024Joseph Klein IIIDirectorSell12,000$50.00$600,000.00 (Data available from 1/1/2013 forward) IONS Insider Trading Activity - Frequently Asked Questions Who is on Ionis Pharmaceuticals' Insider Roster? The list of insiders at Ionis Pharmaceuticals includes Allene M Diaz, B Lynne Parshall, Brett P Monia, Brian Birchler, C Frank Bennett, Elizabeth L Hougen, Eric Swayze, Eugene Schneider, Joseph Baroldi, Joseph Klein III, Michael R Hayden, Onaiza Cadoret-Manier, Patrick R O'neil, and Richard S Geary. Learn more on insiders at IONS. What percentage of Ionis Pharmaceuticals stock is owned by insiders? 2.60% of Ionis Pharmaceuticals stock is owned by insiders. Learn more on IONS's insider holdings. Which Ionis Pharmaceuticals insiders have been buying company stock? The following insider purchased IONS shares in the last 24 months: Michael R Hayden ($659,000.00). How much insider buying is happening at Ionis Pharmaceuticals? Insiders have purchased a total of 20,000 IONS shares in the last 24 months for a total of $659,000.00 bought. Which Ionis Pharmaceuticals insiders have been selling company stock? The following insiders have sold IONS shares in the last 24 months: Allene M Diaz ($26,969.85), B Lynne Parshall ($3,877,944.73), Brett P Monia ($8,933,193.53), Brian Birchler ($19,291.60), C Frank Bennett ($530,050.00), Elizabeth L Hougen ($883,500.18), Eric Swayze ($983,612.36), Eugene Schneider ($428,000.00), Joseph Baroldi ($166,649.60), Joseph Klein III ($1,105,570.00), Onaiza Cadoret-Manier ($280,536.88), Patrick R O'neil ($1,639,425.75), and Richard S Geary ($132,371.20). How much insider selling is happening at Ionis Pharmaceuticals? Insiders have sold a total of 426,610 Ionis Pharmaceuticals shares in the last 24 months for a total of $19,007,115.68 sold. Ionis Pharmaceuticals Key ExecutivesDr. Brett P. Monia Ph.D. (Age 63)Founder, CEO & Director Compensation: $2.38MMs. Elizabeth L. Hougen M.A. (Age 62)M.B.A., M.S., Executive VP of Finance & CFO Compensation: $1.14M2 recent tradesMs. B. Lynne Parshall Esq. (Age 70)J.D., Director Compensation: $90kDr. Richard S. Geary Ph.D. (Age 66)Executive VP & Chief Development Officer Compensation: $1.01MDr. Eric E. Swayze Ph.D. (Age 58)Executive Vice President of Research Compensation: $1.01MMr. Darren GonzalesChief Accounting Officer & Senior VPDr. C. Frank Bennett BSc (Age 67)Ph.D., Executive VP & Chief Scientific Officer Compensation: $651.64kMr. D. Wade Walke Ph.D.Senior Vice President of Investor RelationsMr. Patrick R. O'Neil Esq. (Age 50)Executive VP, Chief Legal Officer, General Counsel & Corporate Secretary Compensation: $815.69kMs. Hayley SofferVice President of Corporate Communications More Insider Trading Tools from MarketBeat Related Companies BIIB Insider Buying UTHR Insider Buying INCY Insider Buying NBIX Insider Buying EXEL Insider Buying BMRN Insider Buying EXAS Insider Buying RGEN Insider Buying HALO Insider Buying MDGL Insider Buying Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles 3 Tech Stocks With High and Rising Institutional Interest3 Summer Stocks With Insider Buying and Analyst Support3 Tightly-Held Growth Stocks Set Up for Short SqueezesTankers, Takedowns & Air Taxis: Insiders Are Buying These 3 Names3 Tech Stocks Insiders Are Buying: Speculative Plays for June This page (NASDAQ:IONS) was last updated on 6/20/2025 by MarketBeat.com Staff From Our Partners379 passengers walked away from thisWhy Elon Musk Just Invested $51 Million Into Brand New “Miracle Metal” Developed by MIT ScientistsTrue Market Insiders | SponsoredThe IRS Loophole That Lets You Own Gold Tax-FreeWhat if I told you there's a legal way to own real physical gold and silver—and keep your gains tax-free? 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